CHAPTER 7 PCI CONTROLLER
398 Preliminary User’s Manual S15543EJ1V0UM
7.5.12 P_HMCR (Host Mode Control Register)
This register is used to control the PCI-Host functions.
R/WBits Field
Internal
bus
PCI
Default Description
31 PRSTO R/W R 0 Reset Out.
PCI reset output as Host.
The PCI Controller asserts PRSTO during this bit is ‘1’.
30:1 Reserved - - 0 Hardwired to ‘0’s.
0 PARBM R/W R/W 0 PCI arbiter mode.
The bit defines arbiter mode.
0: Alternating mode
1: Rotating mode
7.5.13 P_PCDR (Power Consumption Data Register)
This register is used to indicate the power consumption data for each power state.
The VR4120A should be set the value to this register as initialization. The unit of data is “0.01Watts”.
R/WBits Field
Internal
bus
PCI
Default Description
31:24 D3CSP R/W R 00H D3 Power Consumption Data.
23:16 Reserved - - 00H Hardwired to ‘00H’.
15:8 D1CSP R/W R 00H D1 Power Consumption Data.
7:0 D0CSP R/W R 00H D0 Power Consumption Data.
7.5.14 P_PDDR (Power Dissipation Data Register)
This register is used to indicate the power dissipation data for each power state.
The VR4120A should be set the values to this register as initialization. The unit of data is “0.01Watts”.
R/WBits Field
Internal
bus
PCI
Default Description
31:24 D3DSP R/W R 00H D3 Power Dissipation Data.
23:16 Reserved - - 00H Hardwired to ‘00H’.
15:8 D1DSP R/W R 00H D1 Power Dissipation Data.
7:0 D0DSP R/W R 00H D0 Power Dissipation Data.